Creating SSL crashed apache

I am trying to create an SSL certificate for a domain I am hosting and everytime I enter the certificate sent to me from Commodo and click save under ISPCONFIG it causes httpd to stop and I cannot restart it. This is from the error_log:

Httpd started once I deleted the created certificate. I could go through the process again (have tried twice already) if you think it neccessary, but it is a live webserver with 50+ domains so any downtime is not welcome.

One other thing I noticed (happened the first time httpd crashed, but not the second) was the vhosts.conf file was completely deleted (when I removed the certificate and apache crashed) and I needed to restore it from the most recent snapshot file. I did not try creating the cert request or adding the certificate file directly on the shell, it was all done through the ISPCONFIG web interface.

Looks as if you uploaded a certificate that was not based on the csr that was created by ispconfig. This results in a mismatch of the ssl key and apache is not able to start anymore. To avoid this, take the csr (certificate signing request) that was created by ispconfig and let it sign from your ssl company and then copy the new cert that you get back into the certificate field in ispconfig and select save as action and click on save.